I have a small home network: laptop, Linksys WAG160n router, and Epson SX600F wireless printer.
I rarely turn off my laptop (just shut the lid and put it to sleep) and never turn off the printer or the router (unless I'm going away).
At least two or three times a week, however, I 'lose' the printer from the network and the only way I can get it back is by re-booting the router. Turning the printer off and back on does not help. The printer is in the same room as the router and so signal strength is not an issue.
So why does the printer keep vanishing from the network?
Ret.